NumArray was a reimplementation of [http://www.pfdubois.com/numpy/ Numeric]. It is being phased out in favor of NumPy.
It's web page is http://www.stsci.edu/resources/software_hardware/numarray
[http://numeric.scipy.org/ Numpy] is the recent reimplementation of Numeric. As both developers of Numeric and Numarray are moving to NumPy, NumPy is a good choice for new applications.